Link-edit statement for CDC for ZOS V10.2.1 user exit

We are trying to use one of the delivered CDC for z/OS user exits, CHCSAMUB, that has some additional embedded DB2 SQL statements for a data conversion routine. In the documentation, there are sample LINK-EDIT cards provided: //SYSLIN DD CHANGE CHCCMPLV(CHCUEXL1) INCLUDE SYSLIB(CHCTEXIT) INCLUDE SYSLIB() ENTRY CHCTEXIT NAME (R) /

Can you tell me what this statement does: CHANGE CHCCMPLV(CHCUEXL1)? Should CHCUEXL1 be a delivered module/member with CDC for z/OS? It was not found in the product libraries.